Thematische Bibliographien / Multi-Physics characterization

Auswahl der wissenschaftlichen Literatur zum Thema „Multi-Physics characterization“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

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Zeitschriftenartikel zum Thema "Multi-Physics characterization"

Sivapurapu, Sridhar, Madhavan Swaminathan, Rui Chen, Chirag Mehta, Yi Zhou, Mohamed L. F. Bellaredj, Xiaotong Jia, Paul A. Kohl, Tsung-Ching Huang und Suresh K. Sitaraman. „Multi-Physics Modeling and Characterization of Components on Flexible Substrates“. IEEE Transactions on Components, Packaging and Manufacturing Technology 9, Nr. 9 (September 2019): 1730–40. http://dx.doi.org/10.1109/tcpmt.2019.2931452.

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Kim, Min-Ki, und Sang Won Yoon. „Thermal Impedance Characterization Using Optical Measurement Assisted by Multi-Physics Simulation for Multi-Chip SiC MOSFET Module“. Micromachines 11, Nr. 12 (30.11.2020): 1060. http://dx.doi.org/10.3390/mi11121060.

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In this paper, an approach to determine the thermal impedance of a multi-chip silicon carbide (SiC) power module is proposed, by fusing optical measurement and multi-physics simulations. The tested power module consists of four parallel SiC metal-oxide semiconductor field-effect transistors (MOSFETs) and four parallel SiC Schottky barrier diodes. This study mainly relies on junction temperature measurements performed using fiber optic temperature sensors instead of temperature-sensitive electrical parameters (TESPs). However, the fiber optics provide a relatively slow response compared to other available TSEP measurement methods and cannot detect fast responses. Therefore, the region corresponding to undetected signals is estimated via multi-physics simulations of the power module. This method provides a compensated cooling curve. We analyze the thermal resistance using network identification by deconvolution (NID). The estimated thermal resistance is compared to that obtained via a conventional method, and the difference is 3.8%. The proposed fusion method is accurate and reliable and does not require additional circuits or calibrations.

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Haque, M. A., S. Kumar und M. T. Alam. „A MEMS-Based Platform for Multi-Physics Characterization of Ultra-Thin Freestanding Films“. ECS Transactions 50, Nr. 12 (15.03.2013): 487–94. http://dx.doi.org/10.1149/05012.0487ecst.

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Oppen, Dominic, Lisa M. Berger, Monika Gibis und Jochen Weiss. „Sensory Texture and Mastication Physics of Multi-Phase Meat Products“. Applied Sciences 12, Nr. 21 (01.11.2022): 11076. http://dx.doi.org/10.3390/app122111076.

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Food products often consist of several phases. Comminuted meat products, for example, are multiphase systems consisting of structured meat particles and unstructured batter-like substance. To develop and understand the processing of these products, it is important to understand the sensory and mechanical perception principles. To this end, two-phase food prototypes consisting of mixtures of ground beef and beef batter were prepared and subjected to sensory, texture, and oral processing analysis. The oral processing analysis focused on the biomechanical data of the chewing process, namely the kinematics of jaw movement and electromyographic activity. The ground meat served as the anisotropic phase and the meat dough as the isotropic phase. A significant increase in muscle activity, duration per bite, and occlusion time with increasing proportion of fibrous particles was demonstrated (p < 0.05). In contrast, a higher proportion of isotropic substance resulted in significantly higher amplitudes of jaw movement and faster jaw kinetics (p < 0.05). In mixed regimes, the system responded mainly according to the dominant phase, with sensory or mechanical response changing at a critical point. In combination with texture and sensory data, a holistic characterization of the food models could be performed.

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Urban, K., M. Carminati, M. Descher, F. Edzards, D. Fink, C. Fiorini, M. Gugiatti et al. „Characterization measurements of the TRISTAN multi-pixel silicon drift detector“. Journal of Instrumentation 17, Nr. 09 (01.09.2022): C09020. http://dx.doi.org/10.1088/1748-0221/17/09/c09020.

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Abstract Sterile neutrinos are a minimal extension of the standard model of particle physics. A laboratory-based approach to search for this particle is via tritium β-decay, where a sterile neutrino would cause a kink-like spectral distortion. The Karlsruhe Tritium Neutrino (KATRIN) experiment extended by a multi-pixel Silicon Drift Detector system has the potential to reach an unprecedented sensitivity to the keV-scale sterile neutrino in a lab-based experiment. The new detector system combines good spectroscopic performance with a high rate capability. In this work, we report about the characterization of charge-sharing between pixels and the commissioning of a 47-pixel prototype detector in a MAC-E filter.

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LEE, Seunghun. „Combinatorial Science for Condensed Matter Physics and Metal Thin-film Study“. Physics and High Technology 29, Nr. 7/8 (31.08.2020): 34–38. http://dx.doi.org/10.3938/phit.29.028.

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In condensed matter physics and materials science, we all traverse artificially designed space with a variation of interest: e.g., compositions, defects, microstructures, etc. The space is sometimes very immense and multi-dimensional. Thus, we take a long and expensive journey and may encounter many puzzling situations. Combinatorial science, based on thin-film library synthesis strategies and high-throughput characterization, may promise joy and outcomes in your research journey. Here, we discuss the necessity and possibilities of the combinatorial approach for a state-of-the-art research in condensed matter physics and for the study of thin metal films.

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Favetti, R., P. Chiovaro, P. A. Di Maio und G. A. Spagnuolo. „Validation of Multi-Physics Integrated Procedure for the HCPB Breeding Blanket“. International Journal of Computational Methods 17, Nr. 06 (14.02.2019): 1950009. http://dx.doi.org/10.1142/s0219876219500099.

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The wide range of requirements and constraints involved in the design of nuclear components for fusion reactors makes the development of multi-physics analysis procedures of utmost importance. In the framework of the European DEMO project, the Karlsruhe Institute of Technology (KIT) is dedicating several efforts to the development of a multi-physics analysis tool allowing the characterization of breeding blanket design points which are consistent from the neutronic, thermal-hydraulic and thermal-mechanical points of view. In particular, a procedure developed at KIT is characterized by the implementation of analysis software only. A preliminary step for the validation of such a procedure has been accomplished using a dedicated model of the DEMO Helium Cooled Pebble Bed Blanket 4th outboard module. A global model representative of nuclear irradiation in DEMO and two local models have been set up. Nuclear power deposition and the spatial distribution of its volumetric density have been calculated using Monte Carlo N-Particle transport code for the aforementioned models and compared in order to validate the procedure set up. The outcomes of this comparative study are herein presented and critically discussed.

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Gao, Hai Lin. „Characterization of the Quarternary Wavelet Wraps with Multi-Scale Factor and Applications in Physics“. Advanced Materials Research 461 (Februar 2012): 656–60. http://dx.doi.org/10.4028/www.scientific.net/amr.461.656.

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In t In this article, we introduce a sort of vector-valued wavelet wraps with multi-scale dilation of space L 2(Rn, Cv) , which are generaliza-tions of multivariaale wavelet wraps. A method for designing a sort of biorthogonal vector-valued wavelet wraps is presented and their biorthogonality property is characterized by virtue of time-frequency analysis method, matrix theory, and operator theory. Three biorthogonality formulas regarding these wavelet packets are established. Furtherore, it is shown how to obtain new Riesz bases of space L 2(Rn, Cv) from these wavelet wraps.

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Mishra, Aashwin A., und Sharath S. Girimaji. „Intercomponent energy transfer in incompressible homogeneous turbulence: multi-point physics and amenability to one-point closures“. Journal of Fluid Mechanics 731 (28.08.2013): 639–81. http://dx.doi.org/10.1017/jfm.2013.343.

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AbstractIntercomponent energy transfer (IET) is a direct consequence of the incompressibility-preserving action of pressure. This action of pressure is inherently non-local, and consequently its modelling must address multi-point physics. However, in second moment closures, pragmatism mandates a single-point closure model for the pressure–strain correlation, that is, the source of IET. In this study, we perform a rapid distortion analysis to demonstrate that for a given mean-flow gradient, IET is strongly dependent on fluctuation modes and critically influences the flow stability, asymptotic states and their bifurcations. The inference is that multi-point physics must be characterized and appropriately incorporated into pressure–strain correlation closures. To this end, we analyse and categorize various multi-point characteristics such as: (i) the fluctuation mode wavevector dynamics; (ii) the spectral space topology of dominant modes; and (iii) the range of IET behaviour and statistically most likely (SML) outcomes. Thence, this characterization is used to examine the validity and limitations of current one-point closures and to propose directions for improving the fidelity of future models.

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Cutroneo, M., A. Mackova, L. Torrisi und V. Lavrentiev. „Laser ion implantation of Ge in SiO2 using a post-ion acceleration system“. Laser and Particle Beams 35, Nr. 1 (22.12.2016): 72–80. http://dx.doi.org/10.1017/s0263034616000860.

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AbstractThis work reports a comparative study of laser ion implantation mainly performed at the Nuclear Physics Institute in Rez (Czech Republic), National Institute of Nuclear Physics (Italy), and the Plasma Physics Laboratory at the University of Messina (Italy) using different approaches. Thick metallic targets were irradiated in vacuum by a focused laser beam to generate plasma-producing multi-energy and multi-species ions. A post-acceleration system was employed in order to increase the energy of the produced ions and to generate ion beams suitable to be implanted in different substrates. The ion dose was controlled by the laser repetition rate and the time of irradiation. Rutherford backscattering analysis was carried out to evaluate the integral amount of implanted ion species, the concentration–depth profiles, the ion penetration depth, and the uniformity of depth profiles for ions laser implanted into monocrystalline substrates. The laser implantation under normal conditions and in post-acceleration configuration will be discussed on the basis of the characterization of the implanted substrates.

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Dissertationen zum Thema "Multi-Physics characterization"

Gianfrancesco, Anthony Giacomo. „Multi-wavelength characterization of cadmium telluride solar cell: Development of Q-EBIC and NSOM measurement techniques“. Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-theses/213.

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Thin-film inorganic solar cells, such as CdTe, have demonstrated the most promise to date for a viable low-cost renewable energy resource. Their current performance, however, is far from the theoretical limit suffering from significant charge recombination losses due to grain boundaries and point defects. It is likely that the microscopic compositions of grain bulk and grain boundaries are significantly different and not optimal for the overall device performance. Good understanding of charge transport along and across the grain boundaries and other microscopic interfaces is lacking, preventing the development of reliable and predictive device models. The insufficient microscopic understanding hinders efficient characterization of photovoltaic materials and also holds back the development of process control techniques. We first show preliminary results for a novel technique, quantum-dot electron-beam induced current to characterize semiconductors in the near-field. We also propose the use of near-field optical scanning microscopy for high precision optical excitation and for local, high-resolution characterization. These imaging techniques are examined with the goal of synthesizing information obtained by both methods, of material phenomena at the relevant length scales, to other measurement methods. The most important nanoscale phenomena being the separation of compositional and electrical effects.

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Otaola, Franco. „Additive manufacturing, flow chemistry and multi-physics simulation applied to the development and optimization of structured reactors“. Thesis, Compiègne, 2022. http://www.theses.fr/2022COMP2660.

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La pression du marché dans un monde globalisé, en parallèle d’une conscience environnementale croissante de la société, pousse l'industrie chimique à développer des procédés plus propres et plus efficaces. Aujourd'hui, il s’agit d’être capable de produire davantage, tout en réduisant l’impact environnemental et les coûts. L'Intensification des Procédés (IP) apparaît comme une solution à ces défis, l'IP étant définie comme "le développement de nouvelles voies de synthèse et de technologies modulaires innovantes susceptibles de déboucher sur des progrès décisifs". Il existe plusieurs approches d'IP, depuis l'utilisation de technologies innovantes, telles que les micro-ondes ou les ultrasons, jusqu'au passage de la chimie en batch à la chimie en flux continu. Le passage de la chimie en batch à la chimie en flux continu présente de nombreux avantages, tels que la production à la demande, une plus grande sélectivité et un meilleur contrôle du processus. De plus, l'amélioration des procédés peut aussi être permise par la miniaturisation des réacteurs, dont la réduction des longueurs de diffusion permet d’améliorer les transferts de chaleur et de matière au sein du réacteur. Parmi ces réacteurs miniaturisés, on trouve les « réacteurs structurés » présentant un certain degré de régularité dans leur structure, qui permet notamment la réduction des points chauds et un meilleur mélange des réactifs. Toutefois, la fabrication de ce type de réacteurs peut s’avérer relativement difficile. La Fabrication Additive (FA) est une technologie de rupture dans plusieurs domaines de l'ingénierie, y compris dans l’industrie chimique. La FA permet notamment la réalisation de réacteurs structurés miniaturisés avec des géométries internes impossibles à fabriquer auparavant. Ces types de structures peuvent présenter de nombreux avantages pour l'industrie chimique, à la condition de pouvoir exploiter correctement le nombre important de géométries et de possibilités permises par la FA. Pour cette raison, il est nécessaire de mieux comprendre comment les nombreux paramètres géométriques des réacteurs structurés affectent leur performance. Cette thèse vise à améliorer la compréhension de ces nouveaux réacteurs, leurs avantages, leurs inconvénients et les défis futurs possibles dans le but d’améliorer leurs performances. Par conséquent, l'objectif principal est de développer une méthodologie complète, depuis la conception, la caractérisation et la simulation de réacteurs structurés jusqu'à leur optimisation. Ce travail est divisé en quatre sections, la fabrication des réacteurs (de la conception de la géométrie jusqu'à leur fabrication par FA), leur caractérisation hydrodynamique par l'étude de la Distribution de Temps de Séjour (DTS), l'étude des performances de ce réacteur pour des applications en catalyse hétérogène (solide/liquide) et leur simulation par Mécanique des Fluides Numérique (CFD). Pour la caractérisation hydrodynamique des réacteurs, un système automatisé complet a été développé pour mesurer la DTS par une technique de fluorescence, qui présente l’avantage principal de ne pas être intrusive et permet également une acquisition à haute fréquence. Les réacteurs structurés ont été fabriqués dans une résine polymère qui a permis le greffage de palladium pour l'utilisation des réacteurs dans des réactions catalytiques hétérogènes. Enfin, un premier workflow complet pour la simulation CFD et l'optimisation des réacteurs a été développé. En outre, une présentation des différentes techniques de fabrication additive et des perspectives d'applications futures concernant la fabrication de réacteurs microstructurés ont également été présentées
The market pressure from a globalized world, in conjunction with a growing environmental conscience from society, pushes the chemical industry to develop cleaner and more efficient processes. Today, we should produce more, with reducing our environmental impact and at the same time lowering the costs. The Process Intensification (PI) appears as one solution for this challenge. PI is defined as “the development of new chemical routes and of innovative modular technologies that may lead to some breakthrough progress”. There exist several approaches for PI, from using innovative technologies such as microwaves or ultrasounds, to the transition from the chemistry in batch to flow chemistry. The passage from batch to continuous flow can bring several benefits, such as the production in demand, higher selectivity and better control of the process. The process improvement can be obtained by the miniaturization of the reactors, leading to small diffusion lengths that can improve heat and mass transfer properties. One type of miniaturized reactor are what is called “structured reactors”, with a certain degree of regularity inside their structure which leads to the reduction of hotspots, as well as better mixing among other benefits. Nevertheless, the fabrication of this type of reactors can be ratherchallenging. Additive Manufacturing (AM) has been a disrupting technology in several fields of engineering, including in the chemical industry. AM brings the possibility to fabricate miniaturized structured reactors with internal geometries that were not possible to fabricate. The benefit of this type of structures to the chemistry industry are very promising. Nevertheless, as AM enables a wide range of geometries and possibilities, it is necessary to better understand how the geometrical characteristics of the reactors affect their performance. This thesis aimed to improve the understanding of structured reactors, their advantages, disadvantages and future challenges to improve their performance. Consequently, the main objective was to develop a comprehensive methodology, from the conception, characterization and simulation of structured reactors up to their optimization. The work was divided into four different sections, i.e., the fabrication of the reactors (from the conception of the geometry, to their fabrication by AM), their hydrodynamic characterization by studying the Residence Time Distribution (RTD), the study of their performance for applications in heterogeneous catalysis (solid/liquid) and their simulation by Computational Fluid Dynamics (CFD). For the hydrodynamic characterization of the reactors, a complete automated system was developed to measure the RTD by a fluorescence technique, which had the main benefits of not being intrusive and also offered high frequency acquisition rates. The microstructured reactors were fabricated in a polymeric resin, which enabled the grafting of palladium for the use of the reactors for heterogeneous catalytic reactions. Finally, a first step for the development of a complete workflow for the CFD simulation and optimization of structured reactors was presented. Furthermore, a brief presentation of the different additive manufacturing techniques and the perspectives for future applications regarding the fabrication of microstructured reactors were also presented

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Fantou, Alexandre. „Étude multi-physique et multi-échelle de la réaction d'hydratation du sulfate de calcium hémihydraté“. Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0099.

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En raison de leur capacité de prise, les liants hydrauliques sont utilisés à des fins très variées (e.g., matériaux de construction, substituts osseux, ...). La réaction de prise est toujours initiée par le mélange d'une ou plusieurs poudres fines avec une solution aqueuse. La dissolution des poudres réactives initiales entraîne la formation d'une pâte visqueuse, dont les propriétés évoluent avec le temps pour former une céramique poreuse monolithique par la nucléation et la précipitation de phase(s) plus stable(s). Dans le cadre de cette thèse, le plâtre CaSO4·2H2O obtenu par la réaction d'hydratation du sulfate de calcium hémihydraté CaSO4·0,5H2O est étudié dans des conditions standards (e.g., rapport massique liquide/solide, température et pression), afin de développer des techniques de caractérisation multi-physiques et multi-échelles in-situ et ex-situ pour suivre l'évolution de:- la composition des phases (réaction de dissolution et de précipitation) à l'aide de mesures calorimétriques, de la de la diffractométrie des rayons X et de la spectrophotométrie infrarouge à transformée de Fourier;- la microstructure à l'aide de la microscopie électronique à balayage et de la microtomographie aux rayons X;- les propriétés mécaniques en utilisant la mesure de vitesse de propagation des ultrasons, l'analyse mécanique dynamique en cisaillement et en compression et le test de résistance en compression. Ce panel de techniques a permis de suivre et de corréler les différentes transitions physiques survenant au cours de la réaction de prise et ainsi de dresser un portrait global des phénomènes physiques mis en jeu
Because of their setting ability, hydraulic binders are used for a wide variety of applications (e.g., construction materials, bone substitutes, ...). The setting reaction is always initiated by mixing one or several fine powders with an aqueous solution. The dissolution of the initial reactive powders results in the formation of a viscous paste, whose properties evolve with time to form a porous monolithic ceramic through the nucleation and precipitation of more stable phase(s). In this thesis, gypsum plaster CaSO4·2H2O obtained by the hydration reaction of calcium sulfate hemihydrate CaSO4·0,5H2O is studied under standard conditions (e.g., liquid/solid mass ratio, temperature and pressure), in order to develop multi-physic and multi-scale characterization techniques in-situ and ex-situ to monitor the evolution of:- the phase composition (rate of dissolution and precipitation) using calorimetric measurements, X-ray diffraction and Fourier-transform infrared spectrophotometry techniques;- the microstructure using scanning electron microscopy and X-ray microtomography;- the mechanical properties using ultrasonic propagation velocity measurement, shear and compressive dynamic mechanical analysis and compressive strength testing. This panel of techniques enabled to monitor and to correlate the various physical transitions occurring during the setting reaction, and thus to draw a global picture of the on-going phenomena

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Mousselmal, Hadj Daoud. „Conception de dispositifs piézoélectriques de récupération d’énergie utilisant des structures multidirectionnelles et nanostructurés“. Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0124.

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Ces travaux de thèse portent sur le développement de nouveaux systèmes piézoélectriques récupérateurs d’énergie à partir de vibrations mécaniques environnementales. L’objectif recherché est d’apporter des solutions à certaines contraintes fortes liées à la miniaturisation de ces systèmes, en vue de leur intégration en technologie MEMS. Les 2 axes majeurs suivis lors de ces travaux sont :(i) la nanostructuration par porosification du substrat silicium. Ce procédé permet de créer des zones fonctionnalisées possédant des propriétés locales de masse volumique et de rigidité plus faibles que celles du substrat silicium. Ceci permet d’une part d’améliorer le coefficient de couplage électromécanique global de la structure et, d’autre part, de maintenir la fréquence de résonance du mode fonctionnel dans une gamme fréquentielle basse (< que 1KHz) compatible avec le spectre de nombreuses sources vibratoires usuelles. Une série de modélisation par éléments finis d’un convertisseur type (poutre avec masse sismique) a établi les paramètres dimensionnels optimaux de la zone nanostructurée. L’efficacité de ce procédé de nanostructuration localisée a ensuite été évaluée expérimentalement sur des membranes en silicium. Il a été observé une réduction de la fréquence de résonance du mode fondamental, tout en minimisant les pertes par un choix judicieux de l’emplacement et de la largeur de la zone poreuse. (ii) Le développement de dispositifs récupérateurs à sensibilité multidirectionnelle. Ces dispositifs permettent de récupérer l’énergie quel que soit la direction de la sollicitation externe. Ils exploitent 3 modes propres distincts de flexion sollicités chacun par une composante particulière (ax, ay ou az) du vecteur accélération caractéristique de la sollicitation. Ces dispositifs basés sur une structure planaire de type double poutres orthogonales avec masse sismique centrale sont facilement intégrables et peuvent être déclinés de l’échelle centimétrique à l’échelle millimétrique en utilisant dans ce cas les technologies de type MEMS. Un modèle analytique simple a d’abord mis à jour les mécanismes énergétiques qui permettent d’obtenir une quantité d’énergie constante lorsque le dispositif est soumis à un vecteur sollicitation de direction quelconque. L’optimisation du coefficient de couplage électromécanique de chaque mode fonctionnel, ainsi que l’ajustement de leur fréquence de résonance ont été obtenu à l’aide d’un modèle à éléments finis. L’ensemble de ces résultats théoriques a été expérimentalement validé à l’aide de prototypes centimétriques
This thesis work focuses on the development of new piezoelectric energy recovery systems from environmental mechanical vibration. The goal is to provide solutions to some strong constraints on the miniaturization of these systems, their integration in MEMS technology. The 2 major lines followed in this work are: (i) the nanostructuring by porosification silicon substrate. This method allows to create functionalized areas having local properties of density and lower rigidity than those of the silicon substrate. This allows on the one hand to improve the overall electromechanical coupling coefficient of the structure and, secondly, to maintain the resonant frequency of the operational mode in a low frequency range (< 1KHz) compatible with the spectrum of Many conventional vibratory sources. A series of finite element modeling of a type converter (beam with seismic mass) established the optimum dimensional parameters of nanostructured area. The effectiveness of this localized nanostructuring method was then evaluated experimentally on silicon membranes. It was observed a reduction of the resonance frequency of the fundamental mode, while minimizing losses by a judicious choice of the location and the width of the porous zone. (Ii) The development of recovery devices multidirectional sensitivity. These devices allow to recover energy regardless of the direction of the external load. They use 3 different eigenmodes bending each solicited by a particular component (ax, ay and az) vector solicitation characteristic acceleration. These devices based on a planar structure type double orthogonal beams with central seismic mass can be easily integrated and can be broken down to centimeter scale at the millimeter scale using in this case the MEMS technologies. A simple analytical model was first updated energy mechanisms that enable a constant amount of energy when the device is subjected to a bias vector in any direction. The optimization of the electromechanical coupling coefficient of each functional mode, and the adjustment of their resonance frequency were obtained using a finite element model. All these theoretical results has been experimentally validated using centimeter prototypes

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Forssén, Clayton. „Characterization of Multi Plate Field Mill for Lunar Deployment“. Thesis, Umeå universitet, Institutionen för fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146672.

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During the Apollo 10 and 17 missions NASA astronauts reported that they saw streamers emanating from the surface of the moon. They concluded that the streamers were produced by light scattering from dust particles. The particles are believed to be transported by an ambient electric field. This theorized electric field has never been measured directly, although the electric potential on the surface and above it has. The exact behavior and origin of the electric field is unknown, but has been approximated to be between 1 and 12 V/m. To measure this electrical field a new type of instrument, called Multi Plate Field Mills (MPFM) has been developed. This type of instrument is capable of measuring both the amplitude and directionality of the electrical field. Three of these instruments will be mounted on a 1U CubeSat to be lunched with the PTS mission to the moon scheduled to Q4 2019. In this work the MPFM were characterized. The precision of the instrument for electrical fields applied along the z, y and x axis was found to be 0.6, 1.3, 1.4 (V/m)/(Hz)^(1/2) respectively for measurements in air and 0.14, 0.6, 0.6 (V/m)/(Hz)^(1/2) for measurements in vacuum. This sensitivity outperforms the current state of the art Field Mills and, in addition to that, it provides an assessment of the directionality of the electrical field.
Umeå Lunar Venture

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Mesbahi, Tedjani. „Influence des stratégies de gestion d’une source hybride de véhicule électrique sur son dimensionnement et sa durée de vie par intégration d’un modèle multi-physique“. Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0004/document.

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Ce mémoire contribue à l’amélioration des performances d’une source de stockage hybride embarquée alimentant un véhicule électrique. La solution investiguée est composée de l’association de batteries Li-ion et de super condensateurs, dans le but d’obtenir, par rapport aux solutions classiques, un gain en masse et en durée de vie pour une certaine plage d’autonomie du véhicule. Notre objectif est de mettre à profit l’utilisation de nouvelles méthodes de gestion de la source hybride et de quantifier le gain obtenu. Un modèle multi-physique incluant les aspects électrique, thermique et vieillissement a été développé et intégré dans l’algorithme de gestion d’énergie afin d’évaluer la dégradation progressive des performances des éléments de stockage au cours des cycles de conduite selon la stratégie de gestion implantée. De nouvelles stratégies de gestion ayant pour objectif d’agir sur la durée de vie ont été évaluées. Leur impact sur les performances de la source en termes de masse, coût et durée de vie a pu être quantifié et montre bien que par une meilleure gestion des puissances, il est possible de mieux utiliser le stockeur hybride, ouvrant ainsi la voie à de nouvelles approches de gestion d’énergie pour ces systèmes
This thesis contributes to the improvement of hybrid embedded source performances supplies an electric vehicle. The studied solution is composed of Li-ion batteries and supercapacitors hybridization, with an aim to achieve improved performances in terms of weight and lifetime over traditional solutions. Our main goal is to take the best advantage of new energy management strategies of the hybrid embedded source and quantify obtained improvements. A multi-physic model including electric, thermal and aging behaviors is developed and integrated into the algorithm of energy management in order to evaluate the gradual degradation of storage components performances during driving cycles and implemented control strategy. New energy management strategies intended to act on the lifetime of hybrid embedded source have been evaluated. Their impact on the performances of the source in terms of weight, cost and lifetime has been quantified and clearly shows that it is possible to make better use of hybrid embedded source thanks to a good power sharing, thus opening the way to new approaches of energy management for these systems

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Alarady, Mamdooh R. „Characterization of Image Quality between Multi-Slice Computed Tomography and Cone Beam Computed Tomography for Clinical Used Protocols in Radiation Therapy Treatment Planning“. University of Toledo Health Science Campus / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=mco151080400269082.

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Korostyshevsky, Aaron. „Characterization of Radiation Damage in Multi-Junction Solar Cells Using Light-Biased Current Measurements“. Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1224614484.

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Thesis (M.S.)--University of Toledo, 2008.
Typescript. "Submitted as partial fulfillments of the requirements for the Master of Science Degree in Physics." "A thesis entitled"--at head of title. Bibliography: leaves 41-42.

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Dronov, Roman. „Multi-component protein films by layer-by-layer : assembly and electron transfer“. Phd thesis, Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1728/.

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Electron transfer phenomena in proteins represent one of the most common types of biochemical reactions. They play a central role in energy conversion pathways in living cells, and are crucial components in respiration and photosynthesis. These complex biochemical reaction cascades consist of a series of proteins and protein complexes that couple a charge transfer to different forms of chemical energy. The efficiency and sophisticated optimisation of signal transfer in these natural redox chains has inspired engineering of artificial architectures mimicking essential properties of their natural analogues. Implementation of direct electron transfer (DET) in protein assemblies was a breakthrough in bioelectronics, providing a simple and efficient way for coupling biological recognition events to a signal transducer. DET avoids the use of redox mediators, reducing potential interferences and side reactions, as well as being more compatible with in vivo conditions. However, only a few haem proteins, including the redox protein cytochrome c (cyt.c), and blue copper enzymes show efficient DET on different kinds of electrodes. Previous investigations with cyt.c have mainly focused on heterogeneous electron transfer of monolayers of this protein on gold. An important advance was the fabrication of cyt.c multilayers by electrostatic layer-by-layer self-assembly. The ease of fabrication, the stability, and the controllable permeability of polyelectrolyte multilayers have made them particularly attractive for electroanalytical applications. With cyt.c and sulfonated polyaniline it was for the first time possible that fully electro-active multilayers of the redox protein could be prepared. This approach was extended to design an analytical signal chain based on multilayers of cyt.c and xanthine oxidase (XOD). The system does not need an external mediator but relies on an in situ generation of a mediating radical and thus allows a signal transfer from hypoxanthine via the substrate converting enzyme and cyt.c to the electrode. Another kind of a signal chain is based on assembling proteins in complexes on electrodes in such a way that a direct protein-protein electron transfer becomes feasible. This design does not need a redox mediator in analogy to natural protein communication. For this purpose, cyt.c and the enzyme bilirubin oxidase (BOD, EC 1.3.3.5) are co-immobilized in a self-assembled polyelectrolyte multilayer on gold electrodes. Although these two proteins are not natural reaction partners, the protein architecture facilitates an electron transfer from the electrode via multiple protein layers to molecular oxygen resulting in a significant catalytic reduction current. Finally, we describe a novel strategy for multi-protein layer-by-layer self-assembly combining cyt.c with an enzyme sulfite oxidase (SOx) without use of any additional polymer. Electrostatic interactions between these two proteins with rather separated pI values during the assembly process from a low ionic strength buffer were found sufficient for the layer-by-layer deposition of the both biomolecules. It is anticipated that the concepts described in this work will stimulate further progress in multilayer design of even more complex biomimetic signal cascades taking advantage of direct communication between proteins.
Elektronentransferphänomene in Proteinen stellen den häufigsten Typ biochemischer Reaktionen dar. Sie spielen eine zentrale Rolle bei der Energieumwandlung in der Zelle und sind entscheidende Komponenten in der Atmung und Photosynthese. Diese komplexen Kaskaden biochemischer Reaktionen setzen sich aus einer Reihe von Proteinen und Proteinkomplexen zusammen, die den Energietransfer an verschiedene Formen chemischer Energie koppeln. Die große Effektivität und Selektivität des Signaltransfers in diesen natürlichen Redoxketten war Vorbild für die Entwicklung künstlicher Architekturen, die die wesentlichen Eigenschaften ihrer natürlichen Analoga nachahmen. Die Implementierung des direkten Elektronentransfers (DET) von Proteinen mit Elektroden war ein Durchbruch im Bereich der Bioelektronik. Sie lieferte einen einfachen und effizienten Weg für das Koppeln biologischer Erkennungsereignisse an einen Signalumwandler. Durch den DET können Redoxmediatoren vermieden und damit potentielle Grenzflächen und Nebenreaktionen reduziert werden. Ebenso wird damit die Kompatibilität für in vivo Bedingungen erhöht. Jedoch zeigen nur einige Hämproteine wie das Redoxprotein Cytochrom c (Cyt c) und blaue Kupferproteine einen effizienten DET auf verschiedenen Elektrodentypen. Bisherige Untersuchungen mit Cyt c konzentrierten sich hauptsächlich auf den heterogenen Elektronentransfer von Monoschichten dieses Proteins auf Gold. Ein wichtiger Fortschritt war die Herstellung von Cyt c Multischichten durch die elektrostatische Layer-by-Layer-Technik. Die einfache Herstellung, die Stabilität sowie die kontrollierbaren Permeationseigenschaften von Polyelektrolyt-Multischichten machte sie besonders attraktiv für elektroanalytische Anwendungen. So gelang es auch zum ersten Mal vollständig elektroaktive Multischichten aus Cyt c und Polyanilinsulfonsäure zu präparieren. Dieser Ansatz wurde hier erweitert, um eine analytische Signalkette auf der Basis von Multischichten aus Cyt c und Xanthinoxidase zu entwerfen. Das System bedarf keinen externen Mediator, es hängt jedoch von der in situ Generierung eines vermittelnden Radikals ab und erlaubt daher einen Signaltransfer von Hypoxanthin über ein substratumwandelndes Enzym und Cyt c zur Elektrode. Eine andere Art von Signalketten basiert auf der Assemblierung von Proteinen in Komplexen auf Elektroden in solcher Art und Weise, daß ein direkter Protein-Protein-Elektronentransfer möglich wird. Dieser Ansatz benötigt keinen Redoxmediator in Analogie zu Beispielen aus dem biologischen Signaltransfer. Zu diesem Zweck werden Cyt c und das Enzym Bilirubinoxidase mit einem selbst-assemblierenden Polyelektrolyten auf einer Goldelektrode koimmobilisiert. Obwohl diese zwei Proteine keine natürlichen Reaktionspartner sind, unterstützt die Protein-Architektur einen Elektronentransfer von der Elektrode über mehrere Proteinschichten zu molekularem Sauerstoff und ergibt einen signifikanten katalytischen Reduktionsstrom. Schließlich wird eine neue Strategie beschrieben für eine Selbstassemblierung von Proteinen ohne zusätzlichen Polyelektrolyten - am Beispiel der Kombination von Cyt c mit Sulfitoxidase. Es stellte sich heraus, daß die elektrostatische Wechselwirkung zwischen diesen zwei Proteinen mit ziemlich weit voneinander entfernt liegenden pI-Werten während des Assemblierungsprozesses durch einen Puffer mit geringer Ionenstärke ausreicht um die beiden Biomoleküle nach dem Layer-by-Layer-Prinzip auf einer Elektrode abzuscheiden. Es wird erwartet, daß das entwickelte Konzept von Multiprotein-Assemblaten auf Elektroden weitere Fortschritte bei dem Entwurf von Multischichten und sogar noch komplexeren biomimetischen Signalkaskaden anregen wird und dabei der Vorteil der direkten Kommunikation zwischen Proteinen genutzt wird.

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Marcault, Emmanuel. „Contribution à l'intégration d'un indicateur de vieillissement lié à l'état mécanique de composants électroniques de puissance“. Phd thesis, INSA de Toulouse, 2012. http://tel.archives-ouvertes.fr/tel-00728764.

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Ce travail de thèse s'inscrit dans la cadre d'un projet ANR inter-Carnot " ReMaPoDe (Reliability Management of Power Devices) ". L'objectif général du projet est de réaliser un dispositif permettant d'évaluer en temps réel l'état de vieillissement d'un assemblage de puissance embarqué par le suivi de son état thermique et mécanique pendant son fonctionnement. L'essentiel du travail présenté dans ce mémoire consiste à mettre en évidence la relation entre le vieillissement mécanique d'un assemblage de puissance et les dérives électriques qui peuvent être observées. En outre, compte tenu des problèmes thermiques liés aux applications embarquées, la caractéristique électrique choisie comme indicateur doit être rendue indépendante des effets de la température. Ainsi, après un état de l'art consacré à la présentation des différents types de vieillissement et aux défaillances rencontrées dans les assemblages de puissance, nous distinguerons différentes caractéristiques électriques qui semblent prometteuses pour effectuer le suivi en temps réel de l'état de vieillissement mécanique d'un assemblage de puissance et ce malgré des variations de température ambiante et le vieillissement de certains matériaux constituant l'assemblage.

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Bücher zum Thema "Multi-Physics characterization"

Kringos, Niki. Multi-Scale Modeling and Characterization of Infrastructure Materials: Proceedings of the International RILEM Symposium Stockholm, June 2013. Dordrecht: Springer Netherlands, 2013.

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Altenbach, Holm. Generalized Continua as Models for Materials: With Multi-scale Effects or Under Multi-field Actions. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Zeinolebadi, Ahmad. In-situ Small-Angle X-ray Scattering Investigation of Transient Nanostructure of Multi-phase Polymer Materials Under Mechanical Deformation. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Kringos, Niki, David Frost und Björn Birgisson. Multi-Scale Modeling and Characterization of Infrastructure Materials. Springer, 2013.

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Kringos, Niki, David Frost, Björn Birgisson und Linbing Wang. Multi-Scale Modeling and Characterization of Infrastructure Materials: Proceedings of the International RILEM Symposium Stockholm, June 2013. Ingramcontent, 2015.

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Zeinolebadi, Ahmad. In-situ Small-Angle X-ray Scattering Investigation of Transient Nanostructure of Multi-phase Polymer Materials Under Mechanical Deformation. Springer, 2013.

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Zeinolebadi, Ahmad. In-situ Small-Angle X-ray Scattering Investigation of Transient Nanostructure of Multi-phase Polymer Materials Under Mechanical Deformation. Springer, 2016.

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Buchteile zum Thema "Multi-Physics characterization"

Shi, Zhen-ming, Chen-xi Zhao, Qing-zhao Zhang und Jing Song. „Numerical Characterization of Basalt Platform Slope Under Rainfall Condition“. In Proceedings of GeoShanghai 2018 International Conference: Multi-physics Processes in Soil Mechanics and Advances in Geotechnical Testing, 307–14. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0095-0_35.

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Bhushan, Bharat. „Multi-scale Tribological Characterization“. In Biological and Medical Physics, Biomedical Engineering, 91–136. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15901-5_5.

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Bernard, Cindy, Angela Digulescu, Alexandre Girard und Cornel Ioana. „Multi-lag Phase Diagram Analysis for Transient Signal Characterization“. In Springer Proceedings in Physics, 39–63. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29922-8_3.

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Kovaleva, M. G., Y. N. Tyurin, V. M. Beresnev, M. S. Prozorova, M. Y. Arseenko, V. V. Sirota und I. A. Pavlenko. „Deposition and Characterization of Nanocomposition Cr3C2-TaC-NiCr Coating by Multi-Chamber Detonation Sprayer“. In Springer Proceedings in Physics, 3–6. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18543-9_1.

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Nardone, Marco. „Photovoltaic device modeling: a multi-scale, multi-physics approach“. In Advanced Characterization of Thin Film Solar Cells, 103–34. Institution of Engineering and Technology, 2020. http://dx.doi.org/10.1049/pbpo166e_ch5.

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A. Buot, Felix. „Perspective Chapter: On Entanglement Measures – Discrete Phase Space and Inverter-Chain Link Viewpoint“. In Quantum Entanglement in High Energy Physics [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1002232.

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In contrast to abstract statistical analyses in the literature, we present a concrete physical diagrammatic model of entanglement characterization and measure with its underlying discrete phase-space physics. This paper serves as a pedagogical treatment of this complex subject of entanglement measures. We review the important inherent concurrence property of entangled qubits, as well as underscore its emergent qubit behavior. From the discrete phase space point of view, concurrence translates to translation symmetry of entangled binary systems in some quantitative measure of entanglement. Although the focus is on bipartite system, the technique is readily extendable to multi-partite system of qubits, as can easily be deduced from the physical inverter-chain link model. A diagrammatic analysis of the entanglement of formation for any multi-partite qubit system is given. We show that quantum mechanical joint distribution are entanglements.

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Konferenzberichte zum Thema "Multi-Physics characterization"

„Chapter 12, Multi-physics modelling and characterization“. In EuroSimE 2005. Proceedings of the 6th International Conference on Thermal, Mechanial and Multi-Physics Simulation and Experiments in Micro-Electronics and Micro-Systems, 2005. IEEE, 2005. http://dx.doi.org/10.1109/esime.2005.1502819.

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MacGregor, L., J. Tomlinson und R. Cooper. „Challenges and Pitfalls in Multi-Physics Integration for Reservoir Characterisation“. In Seismic Driven Reservoir Characterization and Production Management. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201412300.

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Poh, Edith S. W., W. H. Zhu, X. R. Zhang, C. K. Wang, Anthony Y. S. Sun und H. B. Tan. „Lead-free solder material characterization for thermo-mechanical modeling“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525046.

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Jansen, K. M. B., C. Qian, L. J. Ernst, C. Bohm, A. Kessler, H. Preu und M. Stecher. „Characterization and modeling of molding compound properties during cure“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525096.

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Saraswat, M. K., K. M. B. Jansen, M. D. Patel, L. J. Ernst, C. Bohm, A. Kessler, H. Preu und M. Stecher. „A characterization method for viscoelastic bulk modulus of molding compounds“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525098.

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Kolluri, M., M. H. L. Thissen, J. P. M. Hoefnagels, J. A. W. van Dommelen und M. G. D. Geers. „Advanced miniature mixed mode bending setup for in-situ interface delamination characterization“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525090.

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Qu, Jianmin, und Remi Dingreville. „Modeling and characterization of interfaces — from an atomistic description to a continuum approach“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525105.

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Chang, Chih-Wei, Raanan Marants, Yuan Gao, Matthew Goette, Jessica E. Scholey, Jeffrey D. Bradley, Tian Liu, Jun Zhou, Atchar Sudhyadhom und Xiaofeng Yang. „Physics-informed multi-modal imaging-based material characterization for proton therapy“. In Physics of Medical Imaging, herausgegeben von Rebecca Fahrig, John M. Sabol und Lifeng Yu. SPIE, 2023. http://dx.doi.org/10.1117/12.2653667.

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Sivapurapu, Sridhar, Chirag Mehta, Rui Chen, Xiaotong Jia, Yi Zhou, Mohamed Bellaredj, Paul A. Kohl, Tsung-Ching Huang, Suresh K. Sitaraman und Madhavan Swaminathan. „Multi-physics Modeling Characterization of Aerosol Jet Printed Transmission Lines“. In 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO). IEEE, 2018. http://dx.doi.org/10.1109/nemo.2018.8503509.

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Shirangi, H., J. Auersperg, M. Koyuncu, H. Walter, W. H. Muller und B. Michel. „Characterization of dual-stage moisture diffusion, residual moisture content and hygroscopic swelling of epoxy molding compounds“. In Multi-Physics simulation and Experiments in Microelectronics. IEEE, 2008. http://dx.doi.org/10.1109/esime.2008.4525009.

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Berichte der Organisationen zum Thema "Multi-Physics characterization"

Hou, Zhangshuan, Huiying Ren, Arun Veeramany, Larry Berg, Timothy Scheibe, Lai-Yung Leung, Alexander Sun, Roger Ghanem und Ty Ferre. Multi-scale Multi-physics Scientific Machine Learning for Water Cycle Extreme Events Identification, Labelling, Representation, and Characterization. Office of Scientific and Technical Information (OSTI), April 2021. http://dx.doi.org/10.2172/1769751.

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Chapman und Toema. PR-266-09211-R01 Physics-Based Characterization of Lambda Sensor from Natural Gas Fueled Engines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), November 2012. http://dx.doi.org/10.55274/r0010022.

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The increasingly strict air emission regulations may require implementing Non-Selective Catalytic Reduction (NSCR) systems as a promising emission control technology for stationary rich burn spark ignition engines. Many recent experimental investigations that used NSCR systems for stationary natural gas fueled engines showed that NSCR systems were unable to consistently control the exhaust emissions level below the compliance limits. Modeling of NSCR components to better understand, and then exploit, the underlying physical processes that occur in the lambda sensor and the catalyst media is now considered an essential step toward improving NSCR system performance. This report focuses on modeling the lambda sensor that provides feedback to the air-to-fuel ratio controller. Correct interpretation of the sensor output signal is necessary to achieve consistently low emissions level. The goal of this modeling study is to improve the understanding of the physical processes that occur within the sensor, investigate the cross-sensitivity of various exhaust gas species on the sensor performance, and finally this model serves as a tool to improve NSCR control strategies. This model simulates the output from a planar switch type lambda sensor. The model consists of three modules. The first module models the multi-component mass transport through the sensor protective layer. The second module includes all the surface catalytic reactions that take place on the sensor platinum electrodes. The third module is responsible for simulating the reactions that occur on the electrolyte material and determine the sensor output voltage.

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